skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Nanostructure transition: From solid solution Ti(N,C) to nanocomposite nc-Ti(N,C)/a-(C,CN{sub x})

Abstract

A nanostructure transition from solid solution (SS) Ti(N,C) to two-phase nanocrystalline (nc)-Ti(N,C)/amorphous (a)-(C,CN{sub x}) thin films was investigated using a combination of high-resolution transmission electron microscopy, x-ray diffraction, and x-ray photoelectron spectroscopy. The finding of the authors is that such a nanostructure transition was strongly controlled by the relative atomic ratio x[x{identical_to}(C+N)/Ti]. The results indicated that SS Ti(N,C) and uncompleted and completed segregated two-phase nanocomposite nc-Ti(N,C)/a-(C,CN{sub x}) were successively formed at x{<=}1.0, 1.0<x<1.2, and x{>=}1.2, respectively. Increase of the x values not only decreased the grain size and promoted the formation of more [200]-oriented nanocrystallites but also produced more disorders and defects in thin films. A maximum hardness was achieved for a SS Ti(N,C) structure at x=1.0. The corresponding nanostructure transition mechanism is also discussed.

Authors:
;  [1]
  1. Department of Manufacturing Engineering and Engineering Management, City University of Hong Kong, Kowloon, Hong Kong (China)
Publication Date:
OSTI Identifier:
20971943
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 90; Journal Issue: 22; Other Information: DOI: 10.1063/1.2745261; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; AMORPHOUS STATE; CARBON; CARBON COMPOUNDS; COMPOSITE MATERIALS; CRYSTALS; GRAIN SIZE; HARDNESS; NANOSTRUCTURES; PHASE TRANSFORMATIONS; SEGREGATION; SOLID SOLUTIONS; THIN FILMS; TITANIUM COMPOUNDS; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY

Citation Formats

Lu, Y. H., and Shen, Y. G. Nanostructure transition: From solid solution Ti(N,C) to nanocomposite nc-Ti(N,C)/a-(C,CN{sub x}). United States: N. p., 2007. Web. doi:10.1063/1.2745261.
Lu, Y. H., & Shen, Y. G. Nanostructure transition: From solid solution Ti(N,C) to nanocomposite nc-Ti(N,C)/a-(C,CN{sub x}). United States. doi:10.1063/1.2745261.
Lu, Y. H., and Shen, Y. G. Mon . "Nanostructure transition: From solid solution Ti(N,C) to nanocomposite nc-Ti(N,C)/a-(C,CN{sub x})". United States. doi:10.1063/1.2745261.
@article{osti_20971943,
title = {Nanostructure transition: From solid solution Ti(N,C) to nanocomposite nc-Ti(N,C)/a-(C,CN{sub x})},
author = {Lu, Y. H. and Shen, Y. G.},
abstractNote = {A nanostructure transition from solid solution (SS) Ti(N,C) to two-phase nanocrystalline (nc)-Ti(N,C)/amorphous (a)-(C,CN{sub x}) thin films was investigated using a combination of high-resolution transmission electron microscopy, x-ray diffraction, and x-ray photoelectron spectroscopy. The finding of the authors is that such a nanostructure transition was strongly controlled by the relative atomic ratio x[x{identical_to}(C+N)/Ti]. The results indicated that SS Ti(N,C) and uncompleted and completed segregated two-phase nanocomposite nc-Ti(N,C)/a-(C,CN{sub x}) were successively formed at x{<=}1.0, 1.0<x<1.2, and x{>=}1.2, respectively. Increase of the x values not only decreased the grain size and promoted the formation of more [200]-oriented nanocrystallites but also produced more disorders and defects in thin films. A maximum hardness was achieved for a SS Ti(N,C) structure at x=1.0. The corresponding nanostructure transition mechanism is also discussed.},
doi = {10.1063/1.2745261},
journal = {Applied Physics Letters},
number = 22,
volume = 90,
place = {United States},
year = {Mon May 28 00:00:00 EDT 2007},
month = {Mon May 28 00:00:00 EDT 2007}
}